chorioretinal

DEFINITION of chorioretinal

The term chorioretinal is an adjective describing anything that involves or relates to both the choroid and the retina of the posterior segment of the eye. The choroid is the highly vascular, pigmented layer of the uveal tract that lies between the retina and the sclera, responsible for nourishing the outer retinal layers. The retina is the light-sensitive neural tissue lining the inner surface of the eye. Because the choroid is the primary blood supply to the outer retina, pathology affecting one layer almost invariably affects the other. Clinically, the term most commonly appears in compound diagnoses such as chorioretinal inflammation (chorioretinitis), chorioretinal scars, and chorioretinal degeneration — all significant causes of posterior segment vision loss. As a profee coder, you’ll see this term frequently in ophthalmology operative and clinic notes, particularly when coding posterior uveitis, retinal detachment repairs, and laser procedures.

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ETYMOLOGY of chorioretinal

greek latin

Component	Origin	Meaning
chorio-	Greek chorion (χόριον)	“Membrane” or “skin” — originally referring to the fetal membrane (chorion); in ophthalmology adopted to name the choroid (the vascular membrane of the eye)
retin-	Latin/Medieval Latin rete / retina	”Net” — referring to the net-like vascular appearance of the retina
-al	Latin -alis	”Pertaining to” or “relating to”

The root chorion was applied to the choroid layer of the eye by early anatomists due to its membranous, skin-like quality. Retina derives from the Latin rete (“net”), a reference to the network of blood vessels visible on the inner surface of the eye. Together, chorioretinal simply means “pertaining to the choroid membrane and the retina.”

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🔀 ALIASES / ALTERNATE TERMS

• Chorioretinitis (inflammation of both choroid and retina — most common clinical form)
• Retinochoroiditis (same inflammation, named retina-first; implies retinal involvement is primary)
• Chorioretinal degeneration (non-inflammatory degenerative changes to choroid/retina)
• Chorioretinal scar (healed lesion from prior inflammation or trauma)
• Posterior uveitis (broader category encompassing chorioretinitis)
• Chorio-retinal (hyphenated variant, same meaning)
• Uveitis, posterior (alternate clinical grouping term)
• Retinochoroidal (less common adjectival variant)

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🔗 RELATED TERMS

• chorioretinitis — active inflammation of the choroid and retina; most common infectious form is toxoplasmic
• Toxoplasmic chorioretinitis — caused by Toxoplasma gondii; most common infectious posterior uveitis worldwide
• CMV retinitis — cytomegalovirus chorioretinitis; classically in HIV/AIDS patients
• Choroiditis — inflammation of the choroid only, without retinal involvement
• Retinitis — inflammation of the retina only
• Posterior uveitis — umbrella category; chorioretinitis is the primary subtype
• Chorioretinal scar — fibrotic remnant of prior chorioretinal inflammation or injury
• Retinal detachment — separation of retina from choroid; often sequela of chorioretinal disease
• Macular degeneration (AMD) — degenerative chorioretinal disease of the macula
• Multifocal choroiditis — pattern of multiple discrete choroidal inflammatory lesions
• APMPEE — Acute Posterior Multifocal Placoid Pigment Epitheliopathy; bilateral inflammatory chorioretinal disease
• Panuveitis — inflammation involving all uveal layers including anterior segment
• Fundus photography / OCT — primary imaging tools for chorioretinal pathology
• Fluorescein angiography (FA) — key diagnostic imaging for chorioretinal vascular integrity

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CODING CORNER

🏥 ICD-10-CM CODES

Chorioretinal Inflammation (H30)

Code	Description
H30.001	Unspecified focal chorioretinal inflammation, right eye
H30.002	Unspecified focal chorioretinal inflammation, left eye
H30.003	Unspecified focal chorioretinal inflammation, bilateral
H30.009	Unspecified focal chorioretinal inflammation, unspecified eye
H30.101	Unspecified disseminated chorioretinal inflammation, right eye
H30.102	Unspecified disseminated chorioretinal inflammation, left eye
H30.103	Unspecified disseminated chorioretinal inflammation, bilateral
H30.109	Unspecified disseminated chorioretinal inflammation, unspecified eye
H30.90	Unspecified chorioretinal inflammation, unspecified eye
H30.91	Unspecified chorioretinal inflammation, right eye
H30.92	Unspecified chorioretinal inflammation, left eye
H30.93	Unspecified chorioretinal inflammation, bilateral

Chorioretinal Scars (H31.0)

Code	Description
H31.001	Unspecified chorioretinal scars, right eye
H31.002	Unspecified chorioretinal scars, left eye
H31.003	Unspecified chorioretinal scars, bilateral
H31.009	Unspecified chorioretinal scars, unspecified eye
H31.011	Macula scars of posterior pole, right eye
H31.012	Macula scars of posterior pole, left eye
H31.013	Macula scars of posterior pole, bilateral

Chorioretinal Disorders in Diseases Classified Elsewhere (H32)

Code	Description
H32	Chorioretinal disorders in diseases classified elsewhere (manifestation code — always code underlying disease first)

Postsurgical Chorioretinal Scars (H59.81)

Code	Description
H59.811	Chorioretinal scars after surgery for detachment, right eye
H59.812	Chorioretinal scars after surgery for detachment, left eye
H59.813	Chorioretinal scars after surgery for detachment, bilateral
H59.819	Chorioretinal scars after surgery for detachment, unspecified eye

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🔧 COMMON CPT CODES (Chorioretinal-Related Procedures)

CPT Code	Description
67145	prophylaxis of retinal detachment; cryotherapy or diathermy, 1 or more sessions
67228	Treatment of extensive or progressive retinopathy (e.g., diabetes); photocoagulation
67210	Destruction of localized lesion of retina; photocoagulation
67220	Destruction of localized lesion of choroid (e.g., choroidal neovascularization); photocoagulation (e.g., laser)
67225	Destruction of localized lesion of choroid; photocoagulation, extrafoveal
67036	Vitrectomy, mechanical, pars plana approach
67041	Vitrectomy, mechanical pars plana; with removal of preretinal cellular membrane
67042	Vitrectomy, mechanical pars plana; with removal of internal limiting membrane of retina
92235	Fluorescein angiography (includes multiframe imaging) with interpretation and report
92240	Indocyanine-green angiography (includes multiframe imaging) with interpretation and report
92250	Fundus photography with interpretation and report
92134	Scanning computerized ophthalmic diagnostic imaging, posterior segment (OCT), with interpretation and report; retina

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⚠️ Coding Note: H32 is a manifestation code — it cannot be sequenced as principal diagnosis. Always code the underlying infectious or systemic disease first (e.g., toxoplasmosis B58.01, syphilis A52.71, TB A18.53). For chorioretinitis in HIV patients, sequence the HIV (B20) first, then the chorioretinitis. Laterality is required for all H30 and H31 codes — always pull it from the operative note or imaging report. For profee ophthalmology claims, distinguish between diagnostic imaging (92134, 92235) and therapeutic destruction codes (67210, 67220) — they cannot be billed together for the same lesion on the same date without documentation supporting separate medical necessity.

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DERIVATIONS of chorioretinal

TABLE definition AS Definition
FROM #medterm
WHERE length(filter(roots, (word) => econtains([[chorioretinal]].roots, word))) > 0 AND file.name != [[chorioretinal]].file.name
SORT file.name ASC

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Query functionality

TABLE definition AS Definition
FROM #medterm
WHERE length(filter(definition, (word) => econtains([[chorioretinal]].definition, word))) > 0 AND file.name != [[chorioretinal]].file.name

Med roots Appendix A Prefixes Appendix B Combining Forms Appendix C Suffixes Appendix D Suffix forms